package cn.majun.controller;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
@RequestMapping("/backend")
public class LoginController {

    @RequestMapping("login")
    public String login(@RequestParam String username, @RequestParam String password, Model model) {
        try {
            // subject - securityManager - realm
            Subject subject = SecurityUtils.getSubject();
            AuthenticationToken token = new UsernamePasswordToken(username, password);
            subject.login(token);
            return "success";
        } catch (UnknownAccountException e) {
            e.printStackTrace();
            model.addAttribute("errMessage", "用户不存在");
            return "login";
        } catch (IncorrectCredentialsException e) {
            e.printStackTrace();
            model.addAttribute("errMessage", "密码错误");
            return "login";
        } catch (Exception e) {
            e.printStackTrace();
            model.addAttribute("errMessage", "系统错误");
            return "login";
        }
    }
}
